MEDIUM VOLTAGE PRODUCTS
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5.3.2 General specifications of fixed circuit breakers with lh lateral operating mechanisms (12 - 17.5 - 24 kV)
Circuit breaker VD4/L12 VD4/L17 VD4/L24
Standards
Rated voltage Ur [kV]
Rated insulation voltage Us [kV]
Impulse withstand voltage Up [kV]
Rated frequency fr [Hz]
Ir [A]
Rated duty breaking capacity
(symmetrical rated short-circuit current)
Isc [kA] – – – – – –
– – –
Ik [kA] – – – – – –
– – –
Making capacity Ip [kA] – – – – – –
– – –
Sequence of operations
Opening time [ms]
Arcing time [ms]
Total break-time [ms]
Closing time [ms]
Overall dimensions
(maximum)
H [mm]
W [mm]
D [mm]
)
)
)
Pole center-distance P [mm]
Weight (
) [kg]
)
)
)
)
)
)
)
Standardized dimensions table
)
)
)
)
)
)
Wiring diagram without protection
device installed
Operating temperature [°C]
)
)
)
Tropicalization
Electromagnetic compatibility
(
1
) 230 mm pole center-distance
(
2
) 300 mm pole center-distance
(
3
) increase the indicated weight by 20 kg for circuit breakers with REF 601 devices and 3 current sensors
(
4
) the rated current of the REF 601 device must be set in the relay in accordance with the circuit breaker’s rated current
(
5
) “IEC” or “CEI 0-16” version. If the “CEI 0-16” is required, the circuit breaker is always supplied with 3 phase current sensors (Rogowsky coils) installed on the actual circuit breaker and with a
loose toroidal TA. In the “CEI 0-16” version, the REF 601 device opens the circuit breaker by means of the undervoltage release -MU
(
6
) for operating temperature up to -25 °C and storage temperature up to -40 °C, please ask ABB
H
W
D
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